2019-09-28 Ubuntu Trying to get NDP Proxy working vultr IPv6

network interfaces

# ifupdown has been replaced by netplan(5) on this system.  See
# /etc/netplan for current configuration.
# To re-enable ifupdown on this system, you can run:
#    sudo apt install ifupdown
#
#
# The loopback network interface
auto lo
iface lo inet loopback

auto ens3
iface ens3 inet dhcp
iface ens3 inet6 static
        address 2001:19fo:b001:fb5:5400:02ff:fe0a:1ee8
        netmask 64
        #post-up /sbin/ip -6 route del default dev ens3
        up /sbin/ip -6 route add 2001:19f0:ffff::1/128 via fe80::fc00:2ff:fe0a:1ee8 dev ens3
        up /sbin/ip -6 route del ::/0 dev ens3
        up /sbin/ip -6 neigh add proxy 2001:19f0:b001:fb5:8000::1000 dev ens3
        up /sbin/ip -6 neigh add proxy 2001:19f0:b001:fb5:8000::1001 dev ens3
        up /sbin/ip -6 neigh add proxy 2001:19f0:b001:fb5:8000::1002 dev ens3
        up /sbin/ip -6 neigh add proxy 2001:19f0:b001:fb5:8000::1003 dev ens3
        up /sbin/ip -6 neigh add proxy 2001:19f0:b001:fb5:8000::1004 dev ens3
        up /sbin/ip -6 neigh add proxy 2001:19f0:b001:fb5:8000::1005 dev ens3
        up /sbin/ip -6 neigh add proxy 2001:19f0:b001:fb5:8000::1006 dev ens3
        up /sbin/ip -6 neigh add proxy 2001:19f0:b001:fb5:8000::1007 dev ens3
        up /sbin/ip -6 neigh add proxy 2001:19f0:b001:fb5:8000::1008 dev ens3
        up /sbin/ip -6 neigh add proxy 2001:19f0:b001:fb5:8000::1009 dev ens3
        up /sbin/ip -6 neigh add proxy 2001:19f0:b001:fb5:8000::1010 dev ens3
        down /sbin/ip -6 route del 2001:19f0:ffff::1/128 via fe80::fc00:2ff:fe0a:1ee8 dev ens3